Answer :
(3-√5)/(3+2√5)=(a√5-b)/11
19 - 9√5 / -11 = (- 19 + 9√5 )/11
so a = 9
and b = -19
it is easy , right ?
19 - 9√5 / -11 = (- 19 + 9√5 )/11
so a = 9
and b = -19
it is easy , right ?